Milanovic Presents at NASA GRC Meetings

The 4-strut nozzle: pressure iso-surfaces.

Ivana Milanovic, professor of mechanical engineering in CETA, successfully completed the NASA Glenn Faculty Fellowship 2017. Fellowship was hosted by the Propulsion Division and the duration of tenure was 10 weeks. Milanovic’s research focused on the acoustic resonance ‘modes’ and ‘standing waves’ related to the resonance that lead to methods for suppression or avoidance of such tones in aircraft engines. Milanovic presented her collaborative research in the following NASA GRC meetings:

• Inlets & Nozzles Branch Meeting on August 10. The title of the presentation was ‘Resonance & Tones in Multi-Stream Nozzle Flows.’
• Transformational Tools and Technology (TTT) & Commercial Supersonic Technology (CST) Project Meeting on August 9. The title of the presentation was ‘Investigation of Tones with Multi-Stream Nozzles.’
• 2017 NASA Glenn Research Day Poster Session on July 28, Cleveland, OH. The title of the poster was ‘Resonance & Tones in Flow.’

Research has been done in collaboration with Khairul Zaman, Inlets & Nozzles Branch, and  Christopher Miller, Acoustics Branch of NASA Glenn Research Center. The project studied numerically multi-stream nozzle flows and associated resonance phenomena. Numerical results were validated with experimental data obtained in open jet facilities and wind tunnels. This research was also featured in NASA GRC Highlight on Nozzle Flow/Acoustic Simulation.

UNOTEs - 8/16/17